The Sitka Farms Beef Knee Caps Dog Bones are paw-fect for medium and large dogs who are aggressive chewers. These large meaty knee caps are harvested from free ranging grass-fed beef, and they’re free of additives, preservatives, chemicals or anything artificial. They are oval in shape and aren’t cylindrical dog bones. Your pup can easily hold the bone in his paw for hours of yummy chewing. The bone is odor free and won’t stain carpets or furniture, but small pieces of meat will come off during chewing.